Germany and France have claimed that Iran's nuclear programme remains a threat and the search for more UN sanctions should go on despite a US intelligence report that Tehran was no longer trying to build an atomic bomb.
EU and NATO foreign ministers, meeting for separate talks in Brussels, agreed there was no reason to change their position of threatening sanctions against Iran over its nuclear programme, Belgian Foreign Affairs Minister Karel de Gucht said.
Speaking at a joint news conference with French President Nicolas Sarkozy in Paris, German Chancellor Angela Merkel said the existing dual track policy of preparing sanctions against Tehran while leaving the door open to negotiations should go on.
"I think that we are in a process and that Iran still poses a threat," Merkel said, adding that talks between EU mediator Javier Solana and Iran's top nuclear negotiator should continue.
Sarkozy said he fully agreed with Merkel, adding: "What has made Iran move until now is sanctions and firmness."
The US National Intelligence Estimate published on Monday said Iran had stopped its nuclear weapons programme four years ago. It said Iran was continuing to develop the technical means that could be applied to producing weapons.
The report appears likely to increase resistance from Russia and China to US demands for a third round of United Nations sanctions against Iran over its atomic programme.
Russia has said the report is a factor that will be taken into account in negotiations over sanctions, and the head of the UN nuclear watchdog, Mohamed ElBaradei, said the NIE report "somewhat vindicated" Iran.
US Secretary of State Condoleezza Rice, in Brussels for meetings with NATO ministers, urged Russia to help maintain pressure on Iran.